The recent Hitman update that hit console version of the game on March 31st is out for PC. Mainly, the April update is focused on improving the performance of the game. However, the update also adds the Vampire Magician Challenge Pack. The pack is a bunch of new challenges that should be completed wearing the Vampire Magician disguise.
More detailed information, as well as patch notes, can be found here. And here you discuss the latests patch using the official forums.